I put myself in a complicated situation

Today I found out my husband got his girlfriend pregnant. I confronted him about his affair earlier this year, and he said the relationship wasn’t sexual. I don’t know what to think, but frankly I’m not surprised. However, I can’t get a divorce right away due to immigration reasons. I don’t want to give up what I have here, but I don’t want to be dragged into his mess either. The worst part is he still doesn’t think he cheated on me, and kept telling me how much he cares about me... I’m deeply hurt and lost. Don’t think I can trust people again. :’(